Hi, exim doesn't accept unqualified sender|recipients despite the following lines in /etc/exim/exim.conf: qualify_domain = ai.mit.edu qualify_recipient = ai.mit.edu I'm still getting: mail from: <jon> 501 <jon>: sender address must contain a domain mail from: jon@ai.mit.edu 250 <jon@ai.mit.edu> is syntactically correct rcpt to: <jon> 501 <jon>: recipient address must contain a domain What am I missing? -Jon